Several techniques have been introduced to improve the accuracy of closure parameterizations, including definition of a nonlinear eddy viscosity model [1]} or dynamic closure models [2]}, [3]} that allow varying eddy viscosity in time (i.e., \(\eta (t) \leftarrow \eta \) ). In this paper, we first formulate an RL environment and design an agent to discover this eddy viscosity parameter \(\eta (t)\) . We call this approach linear-mode RL (LMRL).
